I doubled this recipe for a large 2.5 lb. flank steak and it came out great! It was incredibly easy and all ingredients that I always have available. We cooked it on our green egg and it smelled so good that the neighbors were curious what it was. They ended up coming over to share in our meal. The balsamic vinegar and sugar makes for a great caramelized crunch on the steak and tenderizes it as well. I also used the basis of the marinade recipe and boiled it down to make a balsamic reduction glaze for chicken that I served with the meal too. Great both ways! 5 stars for being easy, few recipes, delicious, family and neighborhood pleasing.